Explosive container holder and explosive assembly employing same



June 10, 1958 R. E. WOODS 2,837,997

EXPLOSIVE CONTAINER HOLDER AND EXPLOSIVE ASSEMBLY EMPLOYING SAME Filed Aug. 5, 1954 Tact]- United States Patent O EXPLOSIVE CONTAI ER HOLDER AND EXPLo-Q srvn ASSEMBLY EMPLOYING SAME,

Robert E. Woods, Bellaire, Text, assignor to The Texas Company, New York, N. Y., a corporation of Deltaware V V 7 Application August 3, 1954, Serial No. 447,594 4 Claims. (Cl- 102-24) formation traversed by the shot hole.

It has been one expedient heretofore when a high explosive charge is lowered into a shot hole, to tie a weight to the bottom of the charge and lower the resulting assembly into the shot hole. One practice in such an operation has beento tapea detonating medium,.such as a length of Primacord, onto the side of a can of high explosive prior to lowering the can into the shot hole. When such a practice is resorted to, difficulty is experienced during lowering the charge into the shot hole in that the charge tends to hang up or catch on the wall of the shot hole. With such an arrangement it is also diflicult to center the charge assembly exactly within the shot hole While lowering the same. Also, needless to say, taping an explosive medium to the side of a can of high explosive is time consuming and somewhat awkward.

It is an object of this invention to provide a device which can quickly and safely be fastened to a container of high explosive so that by means of such a device the container can be conveniently and quickly centered and lowered within the shot hole.

It is another object of this invention to provide a device which permits the rapid assembly of a plurality of spaced explosive charges which can be convieniently lowered and centered within a shot hole.

Still another object of this invention is to provide an explosive assembly which is particularly useful in a sequential shooting operation whein a plurality of vertically spaced charges are progressively detonated to produce a reinforced seismic wave in a desired direction.

These and other objects of this invention and how they are accomplished will become apparent with reference to the accompanying disclosure and drawing wherein:

Fig. 1 illustrates an explosive assembly in accordance with this invention as it might appear during lowering into a shot hole;

Fig. 2 is a perspective view showing in greater detail a single charge assembly in accordance with this inven-' tion;

Fig. 3 is a perspective view of a device of this invention; and

Fig. 4 is a perspective view of a modified device of this invention.

In accordance with this invention there is provided a device for gripping and supporting a container of high explosive whereby said contained can be quickly and conveniently attached thereto and centered within a shot hole while it is lowered thereinto. The device of this invention comprises an expandable, resilient gripping f member adapted to grip the outside of 1 the wall of an explosive container and support means fastened hingedly or preferably rigidly fixed, at one end of said gripping member and attached 'to the gripping member so as to centrally support said container with respect 'to said gripping member and said support means. Means are provided at the other end of said support means, opposite the end which is attached to the gripping'mernber, for engaging or securinga length of material such as a rope, Primacord or wire'and 'the'like, which might be emcontainer of high explosive, into the shot hole;

ployed to lower the resulting. assembly; includingthe Y Referringnow to the drawing, particularly Fig. l, as il lustrated,- an explosiveassembly comprising-a plurality of cylindrical containers 11 of high explosive whichiare fittted with a reinforcing and sealing bead or flange 11a at the ends thereof; A support device 12 in accordance with this invention is attached to each end of the high explosive container. Means for lowering the resulting assembly, such as a lengthfof Primacord 14, is frictionally engaged in the end of devices 12, opposite the 'endat which these'devices are attached to the explosive concontainers, running spirally downwardly in contact with and alongthe wall of container 11 to a second device 12 which is attached to the other end of the explosive'container 11. Any desired number of explosive containers may be-ass'embled together in the manner indicated in Fig. l and'the resulting'assembly' lowered into a shot hole by means 14 in the, manner indicated;

. Fig. 2 shows in greater detail an explosive assembly in accordance with this invention.

Referring now to Fig. 3 of the drawing, the device.

port means 18 is provided with a frictional gripping means 19 in the form of a hook or U-shapedmember, preferably'integral with the support means 13. It is to be observed that the frictional gripping means or hook 119 is positioned centrally or axially above the arcuate gripping member 17. or hook 19 is of such size that Primacord can be fitted therein'to and snugly and frictionally engaged therein in the manner indicated in Figs. 1 and 2.

Fig. 4 illustrates in perspective another embodiment of the device in accordance with this invention which is substantially the same as the device illustrated in Fig. 3 save that the arcuate gripping means 20 is substantially U-shaped and adapted to be snapped onto the high explosive container from the side.

It is mentioned at this time that the flange or sealing bead 11a located at the ends of the explosive container serves to prevent the device from slipping offthe explosive container should the gripping force exerted by the gripping members be insufficient to prevent the device from slipping along the container.

As' will be apparent to those skilled in the art-upon reading this disclosure many modifications and substitutions are possible without departing from the spiritand scope of this invention.

I claim:

1. An explosive assembly comprising an elongated cylindrical container filled with high explosive, a first container holder including a first resilient split ring gripping the outside of the wall of said container at'one end therer' j, c Patented June'10, 19:58'

Preferably the frictional means of, a second container holder including a second resilient split ring gripping the outside of the wall of said conlength of said explosive material intermediate the points thereof in frictional engagement with said gripping means is in contact with thewall of said container.

2. An explosive assembly according to claim 1 Wherein said container further includes raised bead. structure on the cylindrical walls thereof near. each end for contacting said split'rings in the eventof longitudinal'slippage of said split rings along said container walls.

' 3. An explosive assembly comprising an elongated cylindrical container filled with explosive, a. relatively small diameter length of explosive material for suspending said container, first container holding means for member surrounding the other end of said container; a

second'hook shaped frictional gripping means for gripping said length of explosive material by lateral movement relative thereto and disposed substantially on the axis of said container and at a point remote from said container, and second means for attaching said second hook shaped gripping means to said second split ring member, said explosive assembly. being assembled so that at least part of. said suspending length. of explosive material is in' contact with the Wall of said container.

, 4 An'explosive assembly according to claim 3 wherein said container further includes raised bead structureon the cylindrical Walls thereof near each end for contacting said split ring members in the eventof longitudinal slipfrictionally joining said length of explosive material to 111 said container including a first split ring member surrounding one end of said container, a first hook shaped frictional gripping means for gripping said length of explosive material by lateral movement relative thereto and disposed substantially on the axis of said container and at a point remote from said container, and first means for attaching said first hook shaped gripping means to said first split ring member, second container holding means for frictionally joining said length of explosive material to said container including a second split ring page of said split ring members along said container walls.

7 References Cited in the file of this patent UNITED STATES PATENTS 288,985 Dockum Nov. 27,1883 313,667 Hesser Mar. 10, 1885 483,858 McGarrell Oct. 4, 1892 582,788 Huebener May 18, 1897 778,786 Kramer Dec. 27, 1904 1,339,163 Close May 4, 1920 1,890,726 Farren Dec. 13, 1932 2,358,795 Djidics et a1. Sept. 26, 1944 2,393,278 Bellinger Jan. 22, 1946 2,432,706 Anderson et al Dec. 16, 1947 2,441,397 Counterman May 11, 1948 I 2,750,884 Gaines June 19, 1956 FOREIGN PATENTS 205,749 Great Britain Oct. 25, 1923 141,882 Australia June28, 1951 

